At 12mi(19km) long, 7mi(11km) wide and 300'(91m) tall, Childs glacier flows into the Copper river delta. For scale, the Million Dollar Bridge in the lower left spans 1550'/47m and the width of the Copper river in front of the glacier is 1200'(37m). The calves of this glacier are large enough that there are tsunami warning signs on the opposite bank. Bear are known to frequent the area to eat the salmon that get washed up into the forest from the calving process. Cordova Alaska, USA
This 5 mile glacier is named after Joeseph Billings who, under Russian command, led an expedition to explore and survey western Alaska in 1791-'92 - Wittier, Alaska USA
Every day, 1.5 million gallons (5.7 million liters) of water flow from this 386' (118m) diameter spring. The well, highly carbonated with high arsenic levels, maintains a near constant volume of water and supports a number of endemic species. The overflow from the well has been in use for irrigation since the eighth century. Montezuma Castle National Monument, AZ USA.
